2020-01-012024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/656870摘要:本研究計劃結合海洋環境因子及秋刀魚漁業資料,預報秋刀魚在北太平洋的時空分佈,並提供即時海洋環境資料及海況預報,達到資料整合與漁場即時預報。秋刀魚漁海況預報系統已經建立,提供預報系統讓秋刀魚漁船實驗性試用,包含教育訓練。本年度計畫主要在系統維持與更新,資料更新,系統推廣,並分析使用者行為。 本年度持續整合並更新環境資料,包括表水溫(Sea Surface Temperature),表水鹽度(Sea Surface salinity),水溫鋒面 (ocean temperature front),表水溫鋒面頻度(temperature front frequency),海面高度(Sea Level Height anomaly),海洋生產力(ocean color),洋流流向及流速(geostrophic flow),渦旋動量(eddy kinetic energy) 及海洋生產力(ocean color),以高解析度圖相,每日更新與發佈。並整合過去漁業資料(CPUE),0.5 X 0.5 度方格解析度,將CPUE的空間分佈,按年月份與上述之各環境參數之歷史資料套疊。提供預報系統給秋刀魚漁船實驗性試用,提供四項資訊:1. 每日更新與即時發佈(daily)環境資料。包含彩色與黑白兩個版本,並可以自由放大縮小。(http://nwpacific.oc.ntu.edu.tw/sauryinfo/mplots/mplots_rt_map/)。另外,考量到漁船上網路流量有限,建置低流量網站,讓船長直接輸入需要的經緯度範圍,並只回傳該範圍的海況圖,每張圖片大小控制在100K左右,以PDF形式,以符合船上網路限制及方便船長操作。2. 提供最相關之歷史資訊。亦即,透過比對歷史和當下環境資料,提供最接近當下之歷史環境資料,並套疊CPUE之分布。(http://nwpacific.oc.ntu.edu.tw/sauryinfo/mplots/mplots_sim/)。3. 利用按月份建立的組合預報模式,代入即時環境資料預測當日秋刀魚的出現機率,並以地圖呈現,漁民可依據出現機率的空間分布決定作業位置。只在主要漁期提供預報。並提供低流量下載網頁。(http://nwpacific.oc.ntu.edu.tw/sauryinfo/mplots/mplots_fc/)。4. 整合國際氣象資料,轉載氣象預報。實驗船公司可以透過網路,進入資料庫伺服器,看到這些資訊,再提供給漁船。或由漁船透過低流量網站下載漁海況資訊。對漁民先行教育訓練。系統將依照業者於上年度填復問卷結果及訪談所得之建議,視可行性做修改。建置網頁使用狀況監測系統,分析使用者行為。 <br> Abstract: This project aims to maintain the developed now-cast system for using environmental data to predict fishing ground for Pacific saury with updated data, in order to provide useful tools for fisheries management and lower the cost of fishery operations. Here, we integrate environmental data, including Sea Surface Temperature, Sea Level Height anomaly, ocean color, sea surface salinity, geostrophic flow velocity and direction, and calculate ocean temperature gradient, frequency of temperature front, and eddy kinetic energy. We will display the ocean conditions with high-resolution maps and update the information daily. We then integrate CPUE data of Pacific saury with the environmental data (monthly data with 0.5 degree resolution). We will work with saury fishermen to test our system, using experimental fishing boats. We will provide four sources of information: First, the daily updated environmental data, with color and black-and-white versions and zoom-in function, as well as downloadable pictures for on-board usage (http://nwpacific.oc.ntu.edu.tw/sauryinfo/mplots/mplots_rt_map/); second, the most relevant historical environmental data associated with CPUE ( http://nwpacific.oc.ntu.edu.tw/sauryinfo/mplots/mplots_sim/); third, the distribution map of occurrence probability of saury predicted by a month-specific ensemble forecast using the updated environmental data ( http://nwpacific.oc.ntu.edu.tw/sauryinfo/mplots/mplots_fc/); fourth, weather forecast information from international sources. Registered fisheries companies can access the information in our data servers through internet. We will organize a workshop to introduce our now-cast system to fishermen. We will develop a tool to monitor the system usage behavior of fishermen. Finally, we will use questionnaire to request feedbacks from fishermen.秋刀魚Pacific saury秋刀魚即時漁海況預測分析